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Will SpaceX’s 13th Test Flight of Starship Be Lucky?
The 33 engines of the rocket’s booster stage had begun to ignite during Thursday’s launch attempt, but were then shut down. SpaceX will try again on another day.
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Researchers Claim to Have Solved the Perplexing ‘Reverse Sprinkler’ Problem That Stumped Feynman
Physicists have debated which way a submerged sprinkler sucking in water would spin. Careful experiments provide an answer.
